EP 0624917 A3 19961211 - Method of performing beam compression of radar antenna patterns.
Title (en)
Method of performing beam compression of radar antenna patterns.
Title (de)
Verfahren zur Strahlungskeulenkompression von Radarantennendiagrammen.
Title (fr)
Procédé de compression du faisceau pour diagrammes d'antenne de radar.
Publication
Application
Priority
- JP 13103593 A 19930510
- JP 30079793 A 19931108
Abstract (en)
[origin: EP0624917A2] An antenna system comprises a main antenna (11) for use of transmission and reception and a dedicated sub-antenna for use of reception. The antenna beam of the antenna system is scanned in the direction of a beam width to be compressed. Both received signals of the main antenna and the sub-antenna are fed to a signal processing circuit (14) and a multiplying circuit (14), and converted to power signals and then multiplied by each other. In this processing, only if the cosine value corresponding to the phase difference between the received power signals of the main antenna and the sub-antenna is positive, is the multiplication between the received power signals carried out and the result further multiplied by the cosine value. The obtained signal is then output as a final output signal. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
G01S 7/02 (2006.01); H01Q 3/00 (2006.01); H01Q 21/29 (2006.01)
CPC (source: EP US)
H01Q 21/296 (2013.01 - EP US)
Citation (search report)
- [A] EP 0534617 A1 19930331 - NAT SPACE DEV AGENCY [JP]
- [AP] EP 0567228 A2 19931027 - NAT SPACE DEV AGENCY [JP]
- [A] US 5059966 A 19911022 - FUJISAKA TAKAHIKO [JP], et al
- [A] EP 0142293 A2 19850522 - NEC CORP [JP]
- [A] US 4298872 A 19811103 - RODGERS WILLIAM E
- [A] PATENT ABSTRACTS OF JAPAN vol. 4, no. 51 (P - 007) 17 April 1980 (1980-04-17)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0624917 A2 19941117; EP 0624917 A3 19961211; EP 0624917 B1 19991027; DE 69421313 D1 19991202; DE 69421313 T2 20000210; JP 2544299 B2 19961016; JP H0727846 A 19950131; US 5422637 A 19950606
DOCDB simple family (application)
EP 94301794 A 19940314; DE 69421313 T 19940314; JP 30079793 A 19931108; US 21706494 A 19940314